美國 Scott 出品，原廠包裝。
礦物有其脆性、彈性、彎曲性、韌性及可被切開的一些特性。
本組即是用來學習觀察礦物的特性。
含6件標本。
Various terms such as brittleness, elasticity, flexibility, malleability and sectility are used to describe the particular property of some minerals.
This group of minerals displays a variety of these properties. 6 specimens 1 1/2" x 1 1/2".
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